This traditional chant, led by Ajahn Anan, is recited regularly at Wat Marp Jan. Chanting is a skillful way to quiet the mind and reflect on liberating teachings. The Mangala Sutta details the 38 highest blessings in life that the Lord Buddha taught.
One can listen peacefully or chant along in the Wat Marp Jan chanting book (pages 173-6) found here: https://watmarpjan.org/en/audio-books/books/
The Ratana Sutta, or the Jewel Discourse, is a sutta that Ajahn Anan has recommended chanting particularly in the time of the Covid-19 pandemic. This sutta was taught by the Buddha as a way to help alleviate a plague afflicting the city of Vesali. When the monks chanted the sutta, the plague was dispelled and the city returned to prosperity.
One can listen peacefully or chant along in the Wat Marp Jan chanting book (pages 176-79): https://watmarpjan.org/en/audio-books/books/ (English translation included).
The Karaniya Metta Sutta, or the Discourse on Lovingkindess, is a teaching recited frequently in the Theravada tradition of Buddhism. Great meditation masters have recommended chanting this sutta as a form of protection and a way of sending benevolent wishes of kindness to all beings.
One can listen peacefully or chant along in the Wat Marp Jan chanting book (pages 180-83): https://watmarpjan.org/en/audio-books/books/ (English translation included).